19879420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{829}}^1$

素因数の和:958

約数の個数: 48

約数和(自身を含む): 46015200

約数和(自身を除く): 26135780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 829, 1090, 1199, 1658, 2180, 2398, 3316, 4145, 4796, 5995, 8290, 9119, 11990, 16580, 18238, 23980, 36476, 45595, 90361, 91190, 180722, 182380, 361444, 451805, 903610, 993971, 1807220, 1987942, 3975884, 4969855, 9939710, 19879420]

約数ペア:

[(1, 19879420), (2, 9939710), (4, 4969855), (5, 3975884), (10, 1987942), (11, 1807220), (20, 993971), (22, 903610), (44, 451805), (55, 361444), (109, 182380), (110, 180722), (218, 91190), (220, 90361), (436, 45595), (545, 36476), (829, 23980), (1090, 18238), (1199, 16580), (1658, 11990), (2180, 9119), (2398, 8290), (3316, 5995), (4145, 4796)]